Reportedly born in Mar 1581/2 in Marlock, Somerset, England, and christened there 1 Apr 1582. Married Mary Sims? 4 Jun 1634 in Long Sutton, Somerset, England. Died about 22 Sep 1676 in New London CT. Their child: Jonathan Royce.
Savage claimed that Robert Roice of Boston was identical with this man, who appeared in Connecticut some years later, but since the latter had wife Mary, and the only known wife of the Boston man was Elizabeth, who outlived him, this cannot be true.

Find A Grave contributor bhicks adds:
His marriage record to Mary Sims on ancestry.com says his birth year is 1605∼Son of Robert Royce/Royse/Roise and Margery Hamlyn.

He was baptized on March 9, 1603 in Martock, Somerset, England.

He married Mary Sims on June 4, 1624 in Long Sutton, Somerset, England. Mary died on July 14, 1697 in Wallingford, Connecticut, USA. Mary was the daughter of John/Johannes Sims/Syms and Sara Baker.

There is a question if Robert married a Mary Jugkson on April 8, 1627 in Stamford, Lincolnshire, England.
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ROBERT ROYCE was Chr. 3 Nov. 1605, at Ketton cum Tixover, Rutlandshire, England, the son of William Royce and Jane Casebird. He was a shoemaker by trade which means that he probably served an apprenticeship during his teens. An apprenticeship normally started at age fourteen and ran for seven years. Thus at age twenty-one he would be free to marry.
Robert was married, 8 Apr 1627, to Mary Jugkson or (Jackson) at Stamford St. Michael, Lincolnshire, England. Six children were born to this couple in England, the first two christened at Stamford All Saints were sons named John (20 Dec. 1627 and 29 Jun 1629, (both died in infancy) The last four were christened at Stamford St. Michael. A daughter, Mary, 10 Jul 1631, John (aka Jonathan), 21 Apr 1633, Sarah, 8 Feb 1634/5 and Nehemiah, 30 May 1637. (Origins of Robert Royce of Connecticut; Charles Julian, 2006 – see Memories.)
Exactly when Robert Royce and his family came to New England is unknown. However, he was an early settler at Stratford, Fairfield, Connecticut which was founded in 1639 as "the plantation at Pequonnocke", by the Reverend Adam Blakeman (pronounced Blackman) and William Beardsley. They were accompanied by either 16 or approximately 35 other families—depending on your sources—who had recently arrived in Connecticut from England seeking religious freedom. In 1640 the community was known as Cupheag Plantation. By April 13, 1643, the growing town was known as Stratford, in honor of Stratford-upon-Avon in England.)
Robert first appeared in the town records with an entry for lot number 74 at Stratford, Connecticut dated 16 September 1648. He was still there in 1656 when he witnessed the distribution of Humphrey Spinner's estate in which it was declared that his son was about to marry Humphrey's daughter Mary.
Prior to 1657, they lived in Norwich, Connecticut for a time.
By 1657 the family had removed to New London, Connecticut where he lived in good repute and was one of the 16 original members of the New London Church. The town granted him the original Post lot, on Post Hill. He no doubt plied his trade as a shoemaker and also served as constable in 1660, and in 1661 was representative for New London, one of the townsmen in 1663.
In 1663 the town granted him two lots upon which to settle his two sons, Samuel and Isaac. According to New London tax records, in 1664, he was the 10th wealthiest man in the jurisdiction.

He was appointed to keep an ordinary in 1667, and the same year "freed from training," probably on account of age. He was again townsman in 1668 and a member of the general assembly in 1669.
His daughter, Ruth married, 15 Dec. 1669, John Lothrop; and Sarah married, John Calkins. His eldest son, Jonathan, was one of the first proprietors of Norwich, Connecticut and his four younger sons, Nehemiah, Samuel, Isaac and Nathaniel, settled at Wallingford, after their marriages in New London. John and Ruth Lothrop also lived in Wallingford.
Robert Royce died in New London, Connecticut before 22 Sep 1676 when his unsigned will was probated. There were five sons and three daughters, unnamed, who shared in the distribution of his estate. He also left a Legacy to the Norwich Church in his will.
His widow, Mary, continued to live on Post Hill until 1688, when she agreed to sell the property. She died, 4 Jul 1697, in Wallingford, New Haven, Connecticut. Her son, Samuel, was granted administration of her estate 14 July 1697 at Wallingford.
Children of Robert Royce and Mary Jackson:
1.JOHN ROYCE, chr. 20 Dec 1627, at All Saints, Stamford, Lincolnshire, England; he died 29 May 1628 at Stamford, Lincolnshire, England.
2.JOHN ROYCE, chr. 29 Jun 1629, at all Saints, Stamford, Lincolnshire, England; he died before 1633.
3.MARY ROYCE; chr. 10 Jul 1631, at all Saints, Stamford, Lincolnshire, England; married, probably as his second wife, Thomas Staples about 1650 in Stratford, Fairfield, Connecticut.
4.JOHN (Jonathan) ROYCE, chr 21 Apr 1633, at St. Michael, Stamford, Lincolnshire, England, married (1) in Oct/Nov 1656, at Stratford, Fairfield, Connecticut, Mary Spinning, daughter of Humphrey Spinning and Elizabeth Long, and (2), 4 Jun 1660, Deborah Clakins, daughter of Hugh Calkins and Ann _____; he died, before 22 Sep 1690, in Norwich, New London, Connecticut.
5.SARAH ROYCE, chr. 8 Feb. 1634/1635 at Stamford St. Michael, Lincolnshire, England; married about 1658 in Norwich, New London, Connecticut, John Calkins, son of Hugh Calkins and Ann _____; she died, 1 May 1711, in Norwich, New London, Connecticut, at the age of 77.
6.NEHEMIAH ROYCE, chr. 30 May 1637 at Stamford St. Michael, Lincolnshire, England; married, 20 Nov. 1660, Hannah Morgan, daughter of James Morgan and Margery Hill; he died, 7 Nov 1706, at Wallingford, New London, Connecticut.
7.SAMUEL ROYCE, born about 1640 at Stratford, Fairfield, Connecticut; married (1), 9 Jan 1666/1667 at New London, New London, Connecticut, Hannah Churchill, and (2) 5 Jun 1690,at Wallingford, New Haven, Connecticut, Sarah Baldwin; he died in 1711 at Wallingford, New Haven, Connecticut.
8.ISAAC ROYCE, born about 1643 at Stratford, Fairfield, Connecticut; married Elizabeth Lothrop, 15 Dec 1669, at New London, New London, Connecticut; he died in Wallingford, New Haven, Connecticut.
9.RUTH ROYCE, born 7 Dec 1645, at Stratford, Fairfield, Connecticut; married, 15 Dec. 1669, John Lothorp, son of Samuel Lothrop and Elizabeth Scudder. She died, 20 Nov 1732, at Wallingford, New Haven, Connecticut.
10.NATHANIEL ROYCE, born 24 Apr 1647 at Stratford, Fairfield, Connecticut; married (1), 27 Oct. 1673, Esther Moss, (2) 21 Apr 1681, Sarah Lothrop, (3) 24 Aug 1707, Hannah Furman and (4) 25 Aug 1708, Abigail Hoyte. He died, 8 Feb 1726/1727, at Wallingford, New Haven, Connecticut.

References:

•Charles Julian, "English Ancestry of Robert Royce of Connecticut;" 25 Feb 2006.
•Dorothy C Burt, "Ancestors of David Walden Burt," http://www.familytreemaker.com/user/b/u/r/Dorothy C Burt, Feb. 1998.
•Burton W. Spear, "Search for the passengers of the Mary & John 1630," vol. 14. p. 58.
•Frank Farnsworth Starr, "Various Ancestral Lines of James Goodwin and Lucy (Morgan) Goodwin of Hartford, Connecticut." pp. 295-301.
•Robert Charles Anderson, "The Great Migration Begins Immigrants to New England 1620 1633" 1995, Boston.
•James Savage, "A Genealogical Dictionary of The First Settlers of New England", 1860: Volume #3, [Rogers Rose.]
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sources which have confused the two Robert Royces living in New England at roughly the same time notably James Savage'sGenealogical Dictionary of New England, vol 3 p 570, and F. M. Calkin's History of New London, pp 293-295.As a result, the children of the two families are often found merged in various genealogies and you frequently see Joshua and Patience as children of Robert and Mary along with a birthdate for Nathaniel in 1639.
There is ample evidence that the Robert Royce married to Elizabeth was not the same as the Robert Royce married to Mary and the ancestor of the Roys members of my ancestral tree. In 1965, Clarence Leslie Hewitt, Jr. did extensive research in New England and in Somerset County, England.He published an essay on his findings entitled "Some Light on the Marriage of Robert and Mary Royce of Connecticut" inEnglish Origins of New England Families, Series 2, Volume 3, pp 42-45 (originally in the NEHGS Register).His main conclusion is that there is no record of a marriage between Robert Royce and Mary Sims dated Jun 4, 1634.He further concludes that a marriage on June 4, 1624 between Robert Rayce and Mary Sims could not be the correct one.He does not believe there could be a 10 year gap between the date of their marriage and the date of their first born child, Sarah or Jonathon.Thus he concludes all claims that the Mary Royce that is our ancestress is Mary Sims are wrong.
He cites work by Frank Farnsworth Starr and Donald Lines Jacobus which provides rather conclusive evidence that the Robert Royce or Rice of Boston and part of the Winthrop Fleet is not the same individual as Robert Royce of New London, Connecticut.Robert Royce of Boston died prior to Oct 1652 and was outlived by his wife Elizabeth
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Robert's Marriage:
Mary Jugkson
mentioned in the record of Robert Royse
Name: Mary Jugkson
Sex: Female
Husband: Robert Royse
Other information in the record of Robert Royse
from England Marriages, 1538–1973

Name:
Robert Royse
Event Type:
Marriage
Event Date:
8 Apr 1627
Event Place:
Stamford, Lincolnshire, England
Event Place (Original):
Saint Michael, Stamford, Lincoln, England
Sex:
Male
Spouse's Name:
Mary Jugkson
Spouse's Sex:
Female